Window-jack



E. W. ROBINSON.

WINDOW JACK. APPLHIATION FILED JAN-2. 1919.

2 SHEETS-SHEET 1.

1,330,348. Patented Feb. 10, 1920.

* UNITED sra rns m rror;

EMMANUEL w. sum er, or crime EwIs, WASHINGTON.

wmnovmmox.

To all whom it may concern:

Be it known that I, EMMANUEL W. ROBIN- soina citizen of the United States, and resident of Camp Lewis, county of Pierce, and State of Washington, have invented certain new and useful Improvements in Window-Jacks, of which the following, is a specification. I

My invention relates to means employed for raising and lowering windows, and consists of what may be called a iaclr, which is entirely separable from the Window, and in fact hasno connection therewith except while being used, andrwhich may-be em-, plowed to raise or close it as may be desired. The object of my invention is to provide atoolof moderate size which may be used for raising and lowering windows where they'are difficultto'move, as for instance, the windows, in cars. j

Myinvention consists of the novel parts and combinations of parts which willbe' herein described and then particularly defined in the claims. The accompany ng drawings show my 1nvent1on embodied in the types of construction which I now-prefer touse. p

Figure 1- is a side view of my device show applied to a window. I

Fig; 2 is aside view of the same device taken, however, from a point at right angles to that of Fig. 1.

Fig. 8 is a section on the line 3-3 of Fig. 4 shows, in detail, the construction of the hook by which engagement is made with the window. Y 7

Figs. 5 and 6 are, respectively, cross section and side elevation. of thedog and its operating mechanism which is used to. connect the two parts of the jack frame.

Fig. 7 is an edge view, and Fig. 8. a side view, of the operating part of -a.modified type ofconstruction.

Fig.9 is a cross section taken on the'line 99 of Fig. 7. a It is very common to find windows which are very difficult to open or close and this often produces considerable trouble. The object of my invention is to provide a device which may be applied to a window to raise or to lower it whenit sticks and cannot be raised or lowered byhand.

7 I provide a small jack which is provided Specification of Letters P tent; Patented Feb. 10,1920; Applicationfiled January 2,1919. ySerial No; 263,317., I i v I with means by which it may be enabledto engage the window and power belapplie'd to-raise it. ,I. willjfirstldescribe the type of construction illustrated-in Figssl ,to 6

inclusive. I

. The frame of. the deyiceconsists ,ofgtwo parts, 1 and 2. Thepgart 1 is the main por-,"

tion of the frame. The part 2 is a,b ar

which is mounted to slide uponfltheother part, the two thus acting inv a: telescopicmannerto vary the over-all length-ofthe devlce, whereby the-jack maybe applied to windows of dilferent-heightsgand be made l to engage. withboth the bottom and topof the casing so that it isfirmlysecured in place. The portion: l of-the frameQis provided with ratchet teeth lO extending. substantially throughout its length, these. teeth with the pawl sols a lever 22" by which the.

.b2tI211Tl2tYbB raised so astoeng-a'ge with the upper side of the win dowcasjing. T heimain part 1 of the frame; is providedwithga slot 22 projects.

, A-t'athe other side ,of themainof the frame '1 is another recess, 13, whic h recess is; also provided with a slot "l t-for the projection-Iofa lockingdog 15.. Theyinner being placed at the inner side of av recess '11, in which the bar-2 .is guidedand-he'ldl The bar 2 has a pawl or dogv 20; secured thereto, andheld, by spring 21,- into engagement with the ratchetteeth 10. Associated 12, at. the back, through which-the lever" surface of the recess13 is. also provided 7 with. a series of;teeth, these formlng a rack which: is suitable for engagement by apinion; as 3,",which is journaleddn a slide hsaid slide fittingin and beingjguided by the channel .13 of the frame.

. The. axis 30- of the] pinion 3 ea tends through slots v18 and 16, at opposite;- sides of the frame, and at one end hasa smallas 3.1; which} it may be turned. Upon-its opposite end it'has a slide; block crank,

32, and also has pivotally connected therewith the dog 5, which is shown separately in Fig.4. This dog 5 is pivoted so that it may be turned to present its window engaging end 50 for use in either raising or lowering the window. V

This dog device 5 is shown as composed other-means, engaging the back side of the part 51 so as to prevent swinging in one direction beyond the position shown in Fig. 41.

. The outer part 52 of this dog has an edge 50 provided preferably with a side tooth at its outer end and of a size and shape adapted to enter the side finger recess which is usually provided at the bottom of a window. In such windows'as have a metal fin- I ger hold secured to their bottom bar and projecting outwardly, this may engage such fin er hold.

t is evident that if the pinion 3 be turned by using the crank 31, the slide 4, in which it is journaled, will be made to move in its guideway up or down, the bar 1, and if the dog 5 is engaged with the window, the window'will be raised or lowered, as the case 7 may be.

In order to secure the jaclr in place by a secure bearing against both the window sill andthe top of thecasing, I have provided means by which a slight, and yet a powerful adjustment of these two parts may be secured for the major adjustment, as by. sliding thebar 2 outwardly. V

By using the dog 20 and the ratchet-teeth 10 thisadjustment of the combined length of the two parts can only be made in units ofthe length of the teeth. This will not at all times secure a firm engagement with the .window casing. I, therefore, pivot the dog '22 is then swung downward. The eccentric 60 acts upon the dog to force the bar 2 upward and to increase slightly the over-all length of the twoparts, In this manner the device-is caused to be firmly secured in place between the top and'bottom portions of the window casing. v

The devlce shown 1n F1gs.'6, 7 8 and 9, is somewhat different 1n construct1on. This employs a bar 7 which is provided with rack teeth 70 upon one edge, and preferably with a foot 71 in order to provide somewhat pinion 3. This pinion is similar in construction and its manner of operation with the pinion, as heretofore described.

The plate from which the slide 8 is made may have ears,as 81, and 82, bent so as to overlap the toothed edge ofthe bar 7. It also has an ear 83, cut from its lower portion and projecting to one side, and serving as a finger with which the window is engaged.

' The operation of this device is the same as the other device. The finger 83 is lowered to the point where it may be engaged with the finger hold atthe bottom of the window.

The crank 31 is then turned so as to cause the pinion to move up along the rack teeth 70, carrying with it the slide 8. This slide being engaged with the window through the finger 83 carries the window with it.

V Vhat I claim as-my invention is: 1. A window lifting jack comprising two bars adjustable lengthwise each other, means for locking said bars in adjusted relation, one of said bars having rack teeth, a slide mounted to move lengthwise of the rack bar, a pinion journaled in said slide and meshing with the rack bar, means for turning the pinion, and a window-engaging dog carried by the slide.

25A window lifting jack comprising a by said rack bar, a pinion journaled in said slide and meshing with the teeth of the rack bar, means for turning the pinion, and a window-engaging dogv pivoted upon the slide by an. axis substantially parallelwith the-axis of the pinion.

3. A window lifting jack comprising two bars adjustable lengthwise each other,.means for locking said bars in adjusted relation,

rack bar, a slide guided lengthwise of and one of said bars having rack teeth, a slide mounted to move lengthwise of the rack bar, a retaining dog carried by the slide and engaging the rack teeth, a pinion journaled in said slide and meshing with therack bar,

means for turning the pinion, and a'win- (low-engaging dog pivoted upon the slide.

Signed at Seattle, Washington, this 23d day of December, 1918. EMMANUEL W. ROBINSON. 

